Check-lock.



' wi/bnmo S. STEWART.

CHECK LOCK.

APPLICATION FILED 001.14, 1911.

1,065,403, Patented June 24, 1913.

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SCOTT STEWART, OF RIVESVILLE, WEST VIRGINIA.

CHECK-LOCK.

Specification of Letters Patent. Patented Jung 24 1913,

Application filed Qctober 14, 1911. Serial No, 654,656.

T 0 all whom it may concern Be it known that I, Soorr'r STEWART, acitizen of the United States, residing at Rives ville, in the county ofMarion and State of est Virginia, have invented certain new and usefulImprovements in Check-Locks, of which the following is a specification.

This invention relates to a check lock, designed to be used inconnection with mining cars, which are tipped or tilted when beingunloaded.

An important object of this invention is to'provide a device of theabove character, whereby a check may be readily and easily attached to acar in such a manner thatsaid check can not be. removed therefrom untilthe car is tipped or tilted, subsequent to which the check may be easilyremoved.

A further object of this invention is to provide a check lock of theabove character, which is positive in its operation, simple inconstruction and cheap to manufacture.

A further object of this invention is to provide a novel form of casingfor the lock.

Other objects and advantagesof this invention will be apparent duringthe course of the following description.

Figure l is a frontview of my improved check lock, showing the casing orhousing for the same, partly in section, Fig. 2 is a transversesectional view taken on line 22 of Fig. 1, Fig. 3 is an inside view ofone of the casing-members forming a portion of the lock, the detachablecheck being shown as being-inserted into the device, Fig. 4c is asimilar view, showing the detachable check in its locked position, andFig. 5 is a similar view showing the casing-member tilted, whereby theball is disposed to one side of the check, which may now be removed.

In the drawings wherein is-illustrated a preferred embodiment of'niyinvention, the numerals 1 and 2 designate preferably cylindrical twincasing-members, having their inner adjacent edges provided withinterfitting flanges, as shown. The casing-membersl and 2 form the.housing or body portion of the lock, which housing is disposed within aprotecting casing 3, and secured therein by bolts 4, whichalsoserve tohold the casing-members 1 and 2 in locked en gagement. The protectingcasing 3 is providedwith a number of laterally extending ears f, adaptedto be engaged by screws 5, whereby the protecting casing may be attachedto a car. The casing-members l and shoulders 15 and 15.

ripheries for forming a suitable opening for the reception of the shank8. The casings 1 and 2 are further provided with registering openings11, which are inclined when the entire device is in its normal position,and form a tortuous ball receiving runway, there being upper and loweropposed iiiwardly extending shoulders 13' and 13. Vithin the runway isdisposed a ball 12,

which is adapted to travel longitudinally therein, when the device istilted, as will be explained. The shank 8 has its upper end beveled, asshown, and said shank is provided upon one side with a cut out portionor tortuous runway 14;, there being upper and lower opposed. inwardlyextending When the check 9 is moved to occupy either its uppermost orlowermost position so that the two tortuous runways do not perfectlyregister, it is obvi ous that the ball 12 can not possibly move out ofthe runway 14 so that the tag may be removed. hen the two tortuousrunways are in perfect registration, as shown in Fig. 5, the ball canrun out of the runway 14 when the device is tilted, but can not be arredout of the same when the device is in its vertical position by strikingthe car with a sledge hammer or the like. It is thus seen that thedevice includes two relatively movable tortuous runways, which must bemoved into registration before the ball is free to roll, upon the devicebeing tilted. The functionof these two tortuous runways is to preventtheimproper movement of the .ball when the car is in its vertical position.The detachable check 9 is provided with a key hole opening 1 8.

Attention is called to the enlarged opening 3 of the casing 3, whichreceives the shank 8 and portions of the check 9, as shown. This,opening 3 provides, overlapping ears l which protect the shank 8 andportions of the check 9, preventing the same from being broken off.

Il a

The numeral 19 designates a second check, which carries a headed stud20, adapted for insertion within the key-hole opening 18 and serves tolock the check 19 with the check 9. The check 9 may be provided with anysuitable inscription thereon and is used or placed on the car by theshoveler, while the check 19 is used by the machine man or cutter, saidcheck 19 being also provided with 3 1 oined claims.

any suitable inscription placed thereon.

In the use of my check lock, the check 19 is secured to the check 9,before the shank of the check 9 inserted within the casingmembers 1 and2. It is to be understood that the casing-members 1 and 2 and the protecting casing 3 in their assembled form, as shown in Figs. 1 and 2, arerigidly attached to a mining car so that the same will occupy theirnormal vertical positions, until such car is tilted for the purpose ofunloading. The operator then inserts the shank 8 of the check 9 into theopenings 10. whereby the beveled end 14; of the shank will :anse theball 12 to move longitudinally within its opening to clear said shank.After the shank has been inserted a proper distance the ball 12- willtravel downvvardly and fit within the out-out portion 14L, as clearlyillustrated in Fig. t. The spring 7 engages the upper end of the shank 8to force the same downwardly whereby the two tortuous runways are out ofperfect registration, as shown in Fig. 1. The shoulders 15 and 13 arenow disposed before the ball 12 to positively prevent its rotation. l lhen the shank 8 is moved to its uppermost position. whereby the twotortuous runways are again out of perfect registration, the shoulders 15and 13 engage before the ball 12 to prevent its movement. It is thusseen that the ball can only he made to roll to release the check 9 whenthe two runways are in perfect registration and the device is tilted, asclearly shown in Fig. 5. if the device is in its vertical position withthe two run ays in perfeet registration, the ball can not be made toroll out of the runway 1 1' by striking the car with a sledge hammer orthe like, since said ball would engage the shoulders 15 and 15 and hencereturn to the inner end of the runway 14. It is almost inn ossible toget the two tortuous runways in perfect registration to allow the ballto roll, unless the car is previously tilted, so that the ball may rollthe instant said runways are moved into perfect registration upontheslow upward movement of the shank 8.

Attention is called to the fact that the protecting casing 3 has thelower portion thereof slotted, as shown, for receiving the check 9,whereby the check is protected and can I wish it understood that theform of my invention herewith shown and described is to be taken as apreferred example of the same and that certain changes in the shape,size and arrangement of parts may be resorted to without departing fromthe spirit of the invent-ion or the scope of the sub- Having thusdescribed my invent-ion, I claim z- 1. A check lock of the characterdescribed, comprising a casing provided with an opening extendingtherein, a check for insertion within the opening and provided with akeyhole opening so arranged thereon that its large portion will belocated in the casing when the check is in its locked position, meansfor locking the check with the casin and a second check provided with aheaded stud, which stud is adapted for insertion within the key-holeopening.

.2. The combination with an outer casing having a main recess, of alocking device including a shell mounted in the recess, a check fordetachable connection with the locking device and including a large bodyportion having a reduced shank for insertion with in the shell while thelarge body portion remains exposed exterially of said shells. and earsformed upon the outer casing and over-lapping portions of the shank andlarge body portion, to protect said shank and body portion and preventthe check from being broken oif adjacent the base of the shank.

3. In a check look, a casing to be attached to a tilting car body forbodily movement therewith and provided with a normally inclined tortuousball receiving runway, a ball permanently mounted in said tortuousrunway, a check having a portion provided with a normally inclinedtortuous runway adapted to be moved into and out of perfect registrationwith the first named tortuous runway when said ball is in both runways,whereby the ball is positively held against movement when said runwaysare out of perfect registration and prevented from forced rotation byare or the like when the two runways are in perfect registration andsaid device is in a vertical position.

In testimony whereof I afiix my signature in presence of two witnesses.

SCOTT STEWART.

Witnesses:

HENRY MILLER, B. D. SATTERFIELD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

